Caliber In Wall Speakers 8 Inch Fiber 3-Way (pair)
    Product # 6816
    Caliber In Wall Speakers 8 Inch Fiber 3-Way (pair)
    Product # 6816
    Size : 8in
    5.25in 6.5in 8in
    In Stock This item should ship today (12/7/2016) if ordered within 3 hours 48 minutes

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    Caliber In Wall Speakers 8 Inch Fiber 3-Way (pair)

    Monoprice brings custom in-wall speakers to new levels of affordability with our line of Monoprice Brand Premium in-wall and in-ceiling speakers. These new, high fidelity units deliver the high quality craftsmanship and construction you've come to expect from Monoprice brand products at a fraction of what you would expect to pay for them retail.

    In-wall and in-ceiling speakers allow you to expand your listening environment throughout your entire home and remove the clutter of giant box speakers, giving you back your living space. It's a win-win, no-compromise situation for those who desire high fidelity and those who put emphasis on decor.

    DuPont™ Kevlar® fiber cones are light weight yet extremely rigid, providing very precise audio with minimal distortion from cone flex. Our Kevlar® speakers are matched with an equally precise silk membrane dome tweeter made of titanium fiber thread and a high quality crossover network to ensure high fidelity and low distortion. The lower distortion levels allow the speaker to be driven harder and handle higher peak power levels. The main benefits of our Kevlar® speakers are the clarity and fidelity at which they produce audio.


    • Light & rigid, well balanced, yellow woven Kevlar® cone woofers for distortion free reproduction.
    • Oversized magnets for greater bass impact
    • Precision titanium silk membrane dome tweeters for sweeter highs and pure sonic clarity

    Please note that this video shows the specific instructions for installation of PID 4101. However, it is representational of the steps, tools, and types of procedures that would be used for the installation of any in-wall or in-ceiling speaker and is included on this page for reference purposes only. Please refer to the installation instructions of the in-wall or in-ceiling speaker you have for the specific dimensions and installation procedures.

    Note that the price listed in the video was the price for PID 4101 at the time the video was made. Prices can fluctuate up and down based on production costs and the value of the US$ against foreign currencies.

    Model 6816
    Type 3-Way High-Power In-Wall Speaker
    Woofer Size 8"
    Woofer Cone Kevlar® woven cone with rubber edge
    Woofer Voice Coil 35 mm A.S.V.
    Woofer Magnet 30 oz.
    Midrange Size 4"
    Midrange Cone Kevlar® woven cone with rubber edge
    Midrange Voice Coil 20 mm A.S.V.
    Midrange Magenet 5.4 oz.
    Tweeter Size 1"
    Tweeter Cone Cat-eye silk dome
    Impedance 8 ohms ± 15%
    DC Resistance 7.2 ohms ±7%
    Sensitivity 90dB ±2dB (1 watt/1 meter)
    Power Capacity 100 watts (RMS), 200 watts (Max)
    Frequency Response 50 Hz to 20 kHz
    Maximum Distortion 5%
    Crossover 12 dB
    Adjustment Switch 0, -3, -6 dB
    Fs 50 ±20% Hz without baffle
    Qes 0.749
    Qms 2.472
    Qts 0.575
    Re 7.200 ohm
    Vas 26.823m
    Cold Test Temperature -25° ±3°C for 16 hours
    Heat Test Temperature +70° ±2°C for 16 hours
    Operating Temperature Range -30 ~ +70° ±2°C
    Dimensions (LxWxD) 357 x 255 x 100 mm
    Cutout Dimensions (LxWxD) 324 x 222 x 91 mm


    • Fs = resonant frequency of loudspeaker moving mass (in free air)
    • Qes = electrical Q of loudspeaker
    • Qms = mechanical Q of loudspeaker
    • Qts = total Q of loudspeaker
    • Re = electrical resistance of voice coil
    • Vas = equivalent air volume of moving mass suspension

    DuPont™ and Kevlar® are trademarks or registered trademarks of E.I. du Pont de Nemours and Company.

    4.8 / 5.0
    200 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    So nice, hated to put them in a rarely used room
    My whole house audio speakers consisted of the two way, 8" Monoprice in ceiling speakers and I bought a set of these as I expanded into another room. These sound better than the round two ways but the round two ways sound varies by speaker depending on each location. You can really hear the difference with the extra small woofer of the 3 way. These seem to need a bit more power than the round 2ways as well. Very satisfied and am now debating whether to use these in the ceilings of the next room I'm expanding into versus the round 2 ways. Another handy feature of these that I wished the in ceiling 2 ways had especially since with in ceiling you are working above your head is that the screws to tighten the feet onto the drywall are inset quite a ways. Then if you are using a power screwdriver there is no way you could accidently slip and poke a woofer.

    PROS: Attenuation switch is under the grill instead of behind the unit so you don't have to remove it to adjust as you have to with the in-ceiling version.

    CONS: I have to put something here and so I'll just say getting the grill off with the speaker removal tool is a bit of a chore. The holes in the grill are difficult to get the tool into without damaging the hole slightly. The grill tool needs to be a fraction thinner. Hardly a real con.
    June 9, 2013
    3-Way Speakers
    I purchased 3 pairs of these 3-way speakers to use in my 7.1 surround system that I installed into the dropped ceiling of my basement. I used one pair for the front left and right, another pair for my surrounds, and another pair for my rear surrounds. So far they have completely lived up to my expectations. For the price, you can't beat it! They were easy to install and hook up. One thing that I did do since I was installing these into panels of a dropped ceiling was to add a piece of plywood on top of each panel to better support the weight. This was quite easy and really makes the installation more solid.

    PROS: Quality
    Fast Shipment

    CONS: None
    May 17, 2014
    Great Sound,
    These speakers sound great once installed, but you do have to careful of a couple of things.

    First, when cutting the mounting hole you should make it at least 1/4" larger than the supplied cut template. The template is an exact fit, but as we all know it's hard to mount in an exact fit. Do you self a favor and cut the hole wider, the flanges are wide enough to cover it.

    Second, I strongly recommend that you tighten all the mounting screws to run the threads on all the mounting ears before you mount the speaker. I had three of the mounting ears get off track and bend the screws. Luckily I could use a common dry wall screw as a replacement, but it was a pain.

    PROS: Great sound

    CONS: Supplied cut template is too tight, mounting "ears" don't work well
    February 23, 2015
    First, these speakers are amazing. For the price there's nothing like them. I bought six of them for a 5.1 setup in my large living room (24x32 with ceilings vaulting to 16'). It's a huge space and I wanted hidden speakers. Thought I would try these as I could throw them away if I didn't like them and only be out a little over $200. Added the monoprice 12" sub and the system rocks.

    Install is easy with one exception. When screwing the feet/clamps down they have a tendency to jump out of their tracks and jam. This requires removing the speaker to get them resettled. There's not easy way around it and we ended scrapping one of the speakers all together since we couldn't get it to work at all (we didn't try toooo hard since we had a spare anyway).

    The sound of these guys is quite good. Not much bass, but inwalls don't do much with that anyway. And after adding the sub, it doesn't make a bit of difference. They play quite loud before suddenly hitting a wall where they get hard sounding instead of louder. However, I have put them in a very big space and that volume limit is above where I would ever play them anyway.

    They are a bit hard to drive. My cheapy one with these speakers and another one with 20K worth of high end gear. After installing these speakers with a new, inexpensive Onkyo amp I was very pleased but got a sense that the amp wasn't doing too well driving them. Just for fun I plugged in a B&K Reference 200.7 amp (200 watts x 7 and $2800) to see what that did. They were MUCH better. Fuller, much more controlled, more impact. But, after putting that amp in the downstairs theater and running the Audessey acoustic callibration in the Onkyo I was still very pleased. Especially since I spent more on cabling in the other theater than I did for speakers/sub/receiver/blu-ray in this one.

    One more thing that's worth adding: having five identical speakers creates a fantastically seamless sound. The sound from the center perfectly matches the sides even with the center mounted on its side and under the 50" tv. Front to back sounds seamless too and gives the sense of the sound just being part of the movie instead of being from a bunch of individual speakers. I believe that's the whole point.

    When I put on music or movies to test these speakers, I find I just watch/listen to way more than I was intending. That's the whole point isn't it? To get lost in the experience and not pay any attention to "how does this sound?" I think it is.

    PROS: Very good sound.
    Easy to install.
    Heavily built/well made

    CONS: Mounting hardware can "jump the track" and get stuck before tight.
    Hard to drive. Quality amplification can make a big difference.
    December 5, 2012
    very pleased
    I'm pleased with these, and plan to purchase additional speakers for other rooms in the house.

    PROS: very pleased with the sound of these speakers. I didn't purchase these for a high end theatre set up. I simply wanted to free up some space in the living room by getting rid of some floor standing speakers. These did just the trick. Great sound out of a small package. Ease of painting the surround was nice. Installation was pretty much as simple as it gets....and I'm not the "handiest" of people.

    CONS: vibration in the wall at high levels. remedied that with a thin foam liner between the speaker and the wall. (hidden)
    January 10, 2013
    Sound Great!!

    PROS: Pair these with a sub for sure but a very big step up from the 6 1/2". Man Im happy with these!!!!!

    CONS: None
    March 7, 2013
    Pretty happy with these, especially for the price!
    The first pair I received were DOA out of the box. A large magnet rolled out of the wrapping as soon as I started to unpack them.... Luckily I was in the middle of a remodel and I didn't need to install them right that moment. The return process was super fast and easy, I'm assuming that they've had quality problems in the past and they've come up with a system that works and is trouble free. Customer service was great to work with and after that experience I've bought more and more stuff from Monoprice, i expect that will continue. I finally got them hooked up and I was pleasantly surprised by the sound quality and the base response. I was a little worried that I would HAVE TO install either a passive sub in the wall or get a stand alone powered sub but I might be able to get by with just these and a center channel. I haven't set down to watch a movie yet but I'll bet they balance out well with the 6.5" rear surround speakers I'm using too.

    PROS: Simple design, easy mounting, sound for the price generates no complaints, looks good in the wall. Did I mention for the price these are awesome.

    CONS: Possible quality?
    May 21, 2015
    Great Speakers
    Love the sound, especially for the price!

    PROS: Great sound

    CONS: Internal wiring looks a little amateur
    February 13, 2012
    I've been recommending Monoprice to all my friends since I bought these speakers. I've probably place 8 more orders for stuff since 48 hours or less and it shows up on my front door step every time! Not one problem with problem with any products or service as of yet! We're stoked about our thunderous sound- it's crisp and clean. Everyone wants to come to our house now to watch movies. He'll, even the news sounds good on this system! :)

    PROS: Easy to install- pretty much an "idiot proof" design. I researched and priced in-wall speakers for nearly a year, and then a friend turned me on to Monoprice. I got 5 in-wall and in-ceiling speakers for $200, so I figured what the he'll, I'll give em a try... They sound every bit as good as the Infinity and JBL speakers I was looking at, but cost $1,000 less. Really?! Trust me when I say these speakers are a steal... My neighbors are all jealous now!

    CONS: Can't think of any. No problems installing any of these (except a lot of studs that had to get trimmed near my fireplace!). My first time installing in wall and in-ceiling speakers, and it went without a hitch. They painted up nicely and you barely notice them. That is, until the movie starts... )
    August 20, 2011
    Speaker Heaven
    Completely satisfied with these speakers. Had almost bought the two-way for my main fronts when these became available so I waited and got one of the first sets. All I can say is that I am glad I waited. Can't believe the sound I get from them and the bass is adequate for my tastes. May add a subwoofer eventually to my system but for now it's something that can wait. I used Monoprice speakers and cables for my entire home theater LR Fronts- 6816 3-ways, CC Front- 6317 5 1/4", Mids & Rears- 4929 8" Angled, all hooked up to my V2065 Yamaha receiver. I'm blown away with the sound quality at the price I paid and no one that listens can believe it. I used to be the type that only thought overpriced big name speakers, cables, etc could deliver this type of sound I guess wisdom comes with age. Thanks monoprice for making quality products at an affordable price.
    August 5, 2010
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    Whats the mounting depth for the Caliber 8inch fiber 3way speaker?
    Dennis M on Nov 23, 2016
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